Jigsaw



FIG. 1 is a perspective view of a jigsaw showing my new design;

FIG. 2 is a front side view thereof

FIG. 3 is a rear side view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

In the above drawings the broken lines and the areas within the broken lines form no part of the claimed design. 

The ornamental design for a jigsaw, as shown and described. 